9909001 has 2 divisors, whose sum is σ = 9909002. Its totient is φ = 9909000.

The previous prime is 9908957. The next prime is 9909017. The reversal of 9909001 is 1009099.

9909001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7284601 + 2624400 = 2699^2 + 1620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9909001 is a prime.

It is not a weakly prime, because it can be changed into another prime (9909061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954500 + 4954501.

It is an arithmetic number, because the mean of its divisors is an integer number (4954501).

Almost surely, 2^9909001 is an apocalyptic number.

It is an amenable number.

9909001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909001 is an equidigital number, since it uses as much as digits as its factorization.

9909001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 9909001 is about 3147.8565723362. The cubic root of 9909001 is about 214.7879719703.

The spelling of 9909001 in words is "nine million, nine hundred nine thousand, one".